SR-500 Stingl Switch
(Safety Vacuum Release System)

The Model SR-500 is a Safety Vacuum
Release System (SVRS) which works by
monitoring the vacuum on the suction side
of the pool or spa pump. When a blockage
occurs in the main drain or skimmer a
sudden rise in vacuum will cause the SR-500
to shut down pump operation and activate
an audible alarm. The pump will remain off
with the alarm sounding until manually
reset.

Features and Benefits

Meets the Pool and Spa Safety Act of 2007

Virginia Graeme Baker Pool and Spa Safety Act of 2007

• Complies with ASME/ANSI 112.19.17 as required by the International Building Codes (IBC) and the International Residential Codes (IRC)
• Meets all current codes and standards for SVRSs on new and existing pools and spas

• Can act as pool controller with programmable timer, or as stand alone SVRS working in conjunction with existing pool controller

• Newest state-of-art NEC microprocessor technology-- guaranteed reliability and performance

• Vacuum monitored 128 times per second -- rapid response and accurate readings

• Power monitored 50/60 times per second -- insures continuous power detection

• Can act as a pool and spa controller - with fully programmable 24 hour timer, or as stand alone SVRS working in conjunction with existing pool and spa controller

• Integrates with existing timer box - (for easy retrofit)

• Low vacuum sensing - (prevents cavitations or running the pump dry, eliminating costly equipment failure)

• 30 minute maintenance override - (for pool or spa service)

• Accessible extra dry contact – auxiliary equipment can be added

• Power back-up – insures settings and reading will be saved (30 minute rapid recharge)

• Display error readout - (prevents guessing during troubleshooting)

• Works on all size pumps

• Easy and trouble free installation - (no pipes to cut or glue)

• Turns off pump in milliseconds upon detecting sudden vacuum change

• Multiple audible alarm capabilities – allows for quicker alert to harmful situations

• Provides a layer of protection, reducing entrapment risk